I also need to do a project on black holes, here are some questions that I want to ask: 1) How is a black hole formed? 2) What happens when something is sucked inside a black hole? 3)How can we know the size of an event horizon fo a black hole? 4) Are there any webpages that I can visit for more info on black holes? Please respond as soon as possible, this is urgent!!! Thankyou!! =)